Flame tests can be used to identify some metal ions (cations). Lithium, sodium, potassium, calcium and copper compounds produce distinctive colours in ﬂame tests: • lithium compounds result in a crimson ﬂame • sodium compounds result in a yellow ﬂame • potassium compounds result in a lilac ﬂame • calcium compounds result in an orange-red ﬂame • cop...

What do the images above have in common? they are all show coloured substances. in each case the color is due to the presence of transition metal compounds. transition metals are responsible for a lot of naturally occurring colors Don't try this at home! Questions:

Mercury (symbol Hg) is unusual because it is liquid at room temperature. This property of mercury allows it to be used in thermometers. As the liquid metal changes temperature it expands and contracts and therefore rises or falls up and down the narrow tube.

Enter your text here ... The halogens are a family of elements in group 7 (aka 17) of the periodic table. in this video, you can see how reactive the halogens can be. you can also see the characteristic colours of: ​ ​ ​ chlorine; a pale green gas bromine; a volatile orange-brown liquid. iodine; a shiny grey metallic-looking solid wi...

This animation shows how hydrogen nuclei can be thought of as tiny bar magnets ​Proton NMR produces a spectrum with a number of peaks. The number of peaks corresponds to the number of different chemical environments in which protons exist. High resolution NMR - reveals a splitting pattern Enter your text ...

The motor effect ​When a current passes through a conductor in a magnetic field, the conductor experiences a force. This force is used to provide the motion which drives electric motors. It is therefore known as the Motor Effect Enter your text here ... Enter your text here ...

Conductivity when molten Background ​When a metal combines with a non metal - the compound formed is usually ionic. Ionic compounds tend to form giant lattices. Ionic lattices have some distinctive physical properties: High melting points Conduct an electric current when molten​ They form crystals Many will dissolve well in water The vid...

An overview of the alkali metals reacting with water. notice that all the metals react in the same way with water to produce hydrogen gas and an alkaline solution of the hydroxide of the metal. alkali metal + water --> alkali metal hydroxide + hydrogen gas however the equations given in the video do not make proper use of subscripts N...